Nicholas, James D. and Chechik, Victor orcid.org/0000-0002-5829-0122 (2020) Characterization of Host-Guest Complexes of Supramolecular Self-Assembled Cages Using EPR Spectroscopy. Journal of Physical Chemistry B. pp. 5646-5653. ISSN 1520-5207
Abstract
Host-guest interactions between nitroxide stable radicals and supramolecular coordination cages were investigated using electron paramagnetic resonance (EPR) spectroscopy in water and acetonitrile. TEMPO showed negligible association with the cages in water, while 4-oxo-TEMPO bound with a strength comparable to that previously reported for related ketones. Carboxylic acid-functionalized nitroxides bound strongly to the acetonitrile-soluble coordination cages. In all cases, host-guest complex formation resulted in significant decreases in the molecular tumbling rate of the guests, with tumbling becoming strongly anisotropic. The polarity of the cage environment in both solvents was found to be intermediate between water and acetonitrile.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 American Chemical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details. |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Chemistry (York) |
Depositing User: | Pure (York) |
Date Deposited: | 04 Aug 2020 14:00 |
Last Modified: | 16 Oct 2024 16:51 |
Published Version: | https://doi.org/10.1021/acs.jpcb.0c02599 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1021/acs.jpcb.0c02599 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:163990 |
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Description: Cage Paper J Phys Chem C final v2